package tech.powerjob.server.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.task.AsyncTaskExecutor;
import org.springframework.core.task.TaskExecutor;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import tech.powerjob.server.common.RejectedExecutionHandlerFactory;
import tech.powerjob.server.common.constants.PJThreadPool;
import tech.powerjob.server.common.thread.NewThreadRunRejectedExecutionHandler;

/**
 * 公用线程池配置
 *
 * @author tjq
 * @since 2020/4/28
 */
@Slf4j
@EnableAsync
@Configuration
public class ThreadPoolConfig {

	@Bean(PJThreadPool.TIMING_POOL)
	public TaskExecutor getTimingPool() {
		ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
		executor.setCorePoolSize(Runtime.getRuntime().availableProcessors());
		executor.setMaxPoolSize(Runtime.getRuntime().availableProcessors() * 4);
		// use SynchronousQueue
		executor.setQueueCapacity(0);
		executor.setKeepAliveSeconds(60);
		executor.setThreadNamePrefix("PJ-TIMING-");
		executor.setRejectedExecutionHandler(new NewThreadRunRejectedExecutionHandler(PJThreadPool.TIMING_POOL));
		return executor;
	}

	@Bean(PJThreadPool.BACKGROUND_POOL)
	public AsyncTaskExecutor initBackgroundPool() {
		ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
		executor.setCorePoolSize(Runtime.getRuntime().availableProcessors() * 8);
		executor.setMaxPoolSize(Runtime.getRuntime().availableProcessors() * 16);
		executor.setQueueCapacity(8192);
		executor.setKeepAliveSeconds(60);
		executor.setThreadNamePrefix("PJ-BG-");
		executor.setRejectedExecutionHandler(RejectedExecutionHandlerFactory.newDiscard(PJThreadPool.BACKGROUND_POOL));
		return executor;
	}

	@Bean(PJThreadPool.LOCAL_DB_POOL)
	public TaskExecutor initOmsLocalDbPool() {
		ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
		int tSize = Math.max(1, Runtime.getRuntime().availableProcessors() / 2);
		executor.setCorePoolSize(tSize);
		executor.setMaxPoolSize(tSize);
		executor.setQueueCapacity(2048);
		executor.setThreadNamePrefix("PJ-LOCALDB-");
		executor.setRejectedExecutionHandler(RejectedExecutionHandlerFactory.newAbort(PJThreadPool.LOCAL_DB_POOL));
		return executor;
	}

	/**
	 * 引入 WebSocket 支持后需要手动初始化调度线程池
	 */
	@Bean
	public TaskScheduler taskScheduler() {
		ThreadPoolTaskScheduler scheduler = new ThreadPoolTaskScheduler();
		scheduler.setPoolSize(Math.max(Runtime.getRuntime().availableProcessors() * 8, 32));
		scheduler.setThreadNamePrefix("PJ-DEFAULT-");
		scheduler.setDaemon(true);
		return scheduler;
	}

}
